2 * Marvell Bluetooth driver
4 * Copyright (C) 2009, Marvell International Ltd.
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
15 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
17 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
18 * this warranty disclaimer.
21 #include <linux/module.h>
23 #include <net/bluetooth/bluetooth.h>
24 #include <net/bluetooth/hci_core.h>
26 #include "btmrvl_drv.h"
27 #include "btmrvl_sdio.h"
32 * This function is called by interface specific interrupt handler.
33 * It updates Power Save & Host Sleep states, and wakes up the main
36 void btmrvl_interrupt(struct btmrvl_private *priv)
38 priv->adapter->ps_state = PS_AWAKE;
40 priv->adapter->wakeup_tries = 0;
42 priv->adapter->int_count++;
44 if (priv->adapter->hs_state == HS_ACTIVATED) {
45 BT_DBG("BT: HS DEACTIVATED in ISR!\n");
46 priv->adapter->hs_state = HS_DEACTIVATED;
49 wake_up_interruptible(&priv->main_thread.wait_q);
51 EXPORT_SYMBOL_GPL(btmrvl_interrupt);
53 bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
55 struct hci_event_hdr *hdr = (void *) skb->data;
57 if (hdr->evt == HCI_EV_CMD_COMPLETE) {
58 struct hci_ev_cmd_complete *ec;
61 ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
62 opcode = __le16_to_cpu(ec->opcode);
64 if (priv->btmrvl_dev.sendcmdflag) {
65 priv->btmrvl_dev.sendcmdflag = false;
66 priv->adapter->cmd_complete = true;
67 wake_up_interruptible(&priv->adapter->cmd_wait_q);
69 if (hci_opcode_ogf(opcode) == 0x3F) {
70 BT_DBG("vendor event skipped: opcode=%#4.4x",
80 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
82 int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
84 struct btmrvl_adapter *adapter = priv->adapter;
85 struct btmrvl_event *event;
88 event = (struct btmrvl_event *) skb->data;
89 if (event->ec != 0xff) {
90 BT_DBG("Not Marvell Event=%x", event->ec);
95 switch (event->data[0]) {
96 case BT_EVENT_AUTO_SLEEP_MODE:
97 if (!event->data[2]) {
98 if (event->data[1] == BT_PS_ENABLE)
103 (adapter->psmode) ? "Enable" : "Disable");
105 BT_DBG("PS Mode command failed");
109 case BT_EVENT_HOST_SLEEP_CONFIG:
111 BT_DBG("gpio=%x, gap=%x", event->data[1],
114 BT_DBG("HSCFG command failed");
117 case BT_EVENT_HOST_SLEEP_ENABLE:
118 if (!event->data[1]) {
119 adapter->hs_state = HS_ACTIVATED;
121 adapter->ps_state = PS_SLEEP;
122 wake_up_interruptible(&adapter->event_hs_wait_q);
123 BT_DBG("HS ACTIVATED!");
125 BT_DBG("HS Enable failed");
129 case BT_EVENT_MODULE_CFG_REQ:
130 if (priv->btmrvl_dev.sendcmdflag &&
131 event->data[1] == MODULE_BRINGUP_REQ) {
133 ((event->data[2] == MODULE_BROUGHT_UP) ||
134 (event->data[2] == MODULE_ALREADY_UP)) ?
135 "Bring-up succeed" : "Bring-up failed");
137 if (event->length > 3 && event->data[3])
138 priv->btmrvl_dev.dev_type = HCI_AMP;
140 priv->btmrvl_dev.dev_type = HCI_BREDR;
142 BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
143 } else if (priv->btmrvl_dev.sendcmdflag &&
144 event->data[1] == MODULE_SHUTDOWN_REQ) {
145 BT_DBG("EVENT:%s", (event->data[2]) ?
146 "Shutdown failed" : "Shutdown succeed");
148 BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
153 case BT_EVENT_POWER_STATE:
154 if (event->data[1] == BT_PS_SLEEP)
155 adapter->ps_state = PS_SLEEP;
157 (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
161 BT_DBG("Unknown Event=%d", event->data[0]);
172 EXPORT_SYMBOL_GPL(btmrvl_process_event);
174 static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 opcode,
175 const void *param, u8 len)
178 struct hci_command_hdr *hdr;
180 skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_ATOMIC);
182 BT_ERR("No free skb");
186 hdr = (struct hci_command_hdr *)skb_put(skb, HCI_COMMAND_HDR_SIZE);
187 hdr->opcode = cpu_to_le16(opcode);
191 memcpy(skb_put(skb, len), param, len);
193 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
195 skb_queue_head(&priv->adapter->tx_queue, skb);
197 priv->btmrvl_dev.sendcmdflag = true;
199 priv->adapter->cmd_complete = false;
201 wake_up_interruptible(&priv->main_thread.wait_q);
203 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
204 priv->adapter->cmd_complete,
205 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP)))
211 int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, u8 subcmd)
215 ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1);
217 BT_ERR("module_cfg_cmd(%x) failed\n", subcmd);
221 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
223 int btmrvl_pscan_window_reporting(struct btmrvl_private *priv, u8 subcmd)
225 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
228 if (!card->support_pscan_win_report)
231 ret = btmrvl_send_sync_cmd(priv, BT_CMD_PSCAN_WIN_REPORT_ENABLE,
234 BT_ERR("PSCAN_WIN_REPORT_ENABLE command failed: %#x", ret);
238 EXPORT_SYMBOL_GPL(btmrvl_pscan_window_reporting);
240 int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
245 param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
246 param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
248 BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
251 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2);
253 BT_ERR("HSCFG command failed\n");
257 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
259 int btmrvl_enable_ps(struct btmrvl_private *priv)
264 if (priv->btmrvl_dev.psmode)
265 param = BT_PS_ENABLE;
267 param = BT_PS_DISABLE;
269 ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, ¶m, 1);
271 BT_ERR("PSMODE command failed\n");
275 EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
277 int btmrvl_enable_hs(struct btmrvl_private *priv)
279 struct btmrvl_adapter *adapter = priv->adapter;
282 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0);
284 BT_ERR("Host sleep enable command failed\n");
288 ret = wait_event_interruptible_timeout(adapter->event_hs_wait_q,
290 msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED));
292 BT_ERR("event_hs_wait_q terminated (%d): %d,%d,%d",
293 ret, adapter->hs_state, adapter->ps_state,
294 adapter->wakeup_tries);
296 BT_ERR("hs_enable timeout: %d,%d,%d", adapter->hs_state,
297 adapter->ps_state, adapter->wakeup_tries);
300 BT_DBG("host sleep enabled: %d,%d,%d", adapter->hs_state,
301 adapter->ps_state, adapter->wakeup_tries);
307 EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
309 int btmrvl_prepare_command(struct btmrvl_private *priv)
313 if (priv->btmrvl_dev.hscfgcmd) {
314 priv->btmrvl_dev.hscfgcmd = 0;
315 btmrvl_send_hscfg_cmd(priv);
318 if (priv->btmrvl_dev.pscmd) {
319 priv->btmrvl_dev.pscmd = 0;
320 btmrvl_enable_ps(priv);
323 if (priv->btmrvl_dev.hscmd) {
324 priv->btmrvl_dev.hscmd = 0;
326 if (priv->btmrvl_dev.hsmode) {
327 ret = btmrvl_enable_hs(priv);
329 ret = priv->hw_wakeup_firmware(priv);
330 priv->adapter->hs_state = HS_DEACTIVATED;
331 BT_DBG("BT: HS DEACTIVATED due to host activity!\n");
338 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
342 if (!skb || !skb->data)
345 if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
346 BT_ERR("Tx Error: Bad skb length %d : %d",
347 skb->len, BTM_UPLD_SIZE);
351 if (skb_headroom(skb) < BTM_HEADER_LEN) {
352 struct sk_buff *tmp = skb;
354 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
356 BT_ERR("Tx Error: realloc_headroom failed %d",
365 skb_push(skb, BTM_HEADER_LEN);
367 /* header type: byte[3]
368 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
369 * header length: byte[2][1][0]
372 skb->data[0] = (skb->len & 0x0000ff);
373 skb->data[1] = (skb->len & 0x00ff00) >> 8;
374 skb->data[2] = (skb->len & 0xff0000) >> 16;
375 skb->data[3] = bt_cb(skb)->pkt_type;
377 if (priv->hw_host_to_card)
378 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
383 static void btmrvl_init_adapter(struct btmrvl_private *priv)
387 skb_queue_head_init(&priv->adapter->tx_queue);
389 priv->adapter->ps_state = PS_AWAKE;
391 buf_size = ALIGN_SZ(SDIO_BLOCK_SIZE, BTSDIO_DMA_ALIGN);
392 priv->adapter->hw_regs_buf = kzalloc(buf_size, GFP_KERNEL);
393 if (!priv->adapter->hw_regs_buf) {
394 priv->adapter->hw_regs = NULL;
395 BT_ERR("Unable to allocate buffer for hw_regs.");
397 priv->adapter->hw_regs =
398 (u8 *)ALIGN_ADDR(priv->adapter->hw_regs_buf,
400 BT_DBG("hw_regs_buf=%p hw_regs=%p",
401 priv->adapter->hw_regs_buf, priv->adapter->hw_regs);
404 init_waitqueue_head(&priv->adapter->cmd_wait_q);
405 init_waitqueue_head(&priv->adapter->event_hs_wait_q);
408 static void btmrvl_free_adapter(struct btmrvl_private *priv)
410 skb_queue_purge(&priv->adapter->tx_queue);
412 kfree(priv->adapter->hw_regs_buf);
413 kfree(priv->adapter);
415 priv->adapter = NULL;
418 static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
420 struct btmrvl_private *priv = hci_get_drvdata(hdev);
422 BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
424 if (!test_bit(HCI_RUNNING, &hdev->flags)) {
425 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
426 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
427 skb->data, skb->len);
431 switch (bt_cb(skb)->pkt_type) {
432 case HCI_COMMAND_PKT:
436 case HCI_ACLDATA_PKT:
440 case HCI_SCODATA_PKT:
445 skb_queue_tail(&priv->adapter->tx_queue, skb);
447 wake_up_interruptible(&priv->main_thread.wait_q);
452 static int btmrvl_flush(struct hci_dev *hdev)
454 struct btmrvl_private *priv = hci_get_drvdata(hdev);
456 skb_queue_purge(&priv->adapter->tx_queue);
461 static int btmrvl_close(struct hci_dev *hdev)
463 struct btmrvl_private *priv = hci_get_drvdata(hdev);
465 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
468 skb_queue_purge(&priv->adapter->tx_queue);
473 static int btmrvl_open(struct hci_dev *hdev)
475 set_bit(HCI_RUNNING, &hdev->flags);
480 static int btmrvl_download_cal_data(struct btmrvl_private *priv,
490 print_hex_dump_bytes("Calibration data: ",
491 DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len);
493 ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
494 BT_CAL_HDR_LEN + len);
496 BT_ERR("Failed to download caibration data\n");
501 static int btmrvl_check_device_tree(struct btmrvl_private *priv)
503 struct device_node *dt_node;
504 u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];
508 for_each_compatible_node(dt_node, NULL, "btmrvl,cfgdata") {
509 ret = of_property_read_u32(dt_node, "btmrvl,gpio-gap", &val);
511 priv->btmrvl_dev.gpio_gap = val;
513 ret = of_property_read_u8_array(dt_node, "btmrvl,cal-data",
514 cal_data + BT_CAL_HDR_LEN,
519 BT_DBG("Use cal data from device tree");
520 ret = btmrvl_download_cal_data(priv, cal_data,
523 BT_ERR("Fail to download calibrate data");
531 static int btmrvl_setup(struct hci_dev *hdev)
533 struct btmrvl_private *priv = hci_get_drvdata(hdev);
535 btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
537 priv->btmrvl_dev.gpio_gap = 0xffff;
539 btmrvl_check_device_tree(priv);
541 btmrvl_pscan_window_reporting(priv, 0x01);
543 priv->btmrvl_dev.psmode = 1;
544 btmrvl_enable_ps(priv);
546 btmrvl_send_hscfg_cmd(priv);
551 static int btmrvl_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
557 buf[0] = MRVL_VENDOR_PKT;
558 buf[1] = sizeof(bdaddr_t);
559 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
561 skb = __hci_cmd_sync(hdev, BT_CMD_SET_BDADDR, sizeof(buf), buf,
565 BT_ERR("%s: changing btmrvl device address failed (%ld)",
575 * This function handles the event generated by firmware, rx data
576 * received from firmware, and tx data sent from kernel.
578 static int btmrvl_service_main_thread(void *data)
580 struct btmrvl_thread *thread = data;
581 struct btmrvl_private *priv = thread->priv;
582 struct btmrvl_adapter *adapter = priv->adapter;
587 init_waitqueue_entry(&wait, current);
590 add_wait_queue(&thread->wait_q, &wait);
592 set_current_state(TASK_INTERRUPTIBLE);
593 if (kthread_should_stop()) {
594 BT_DBG("main_thread: break from main thread");
598 if (adapter->wakeup_tries ||
599 ((!adapter->int_count) &&
600 (!priv->btmrvl_dev.tx_dnld_rdy ||
601 skb_queue_empty(&adapter->tx_queue)))) {
602 BT_DBG("main_thread is sleeping...");
606 set_current_state(TASK_RUNNING);
608 remove_wait_queue(&thread->wait_q, &wait);
610 BT_DBG("main_thread woke up");
612 spin_lock_irqsave(&priv->driver_lock, flags);
613 if (adapter->int_count) {
614 adapter->int_count = 0;
615 spin_unlock_irqrestore(&priv->driver_lock, flags);
616 priv->hw_process_int_status(priv);
617 } else if (adapter->ps_state == PS_SLEEP &&
618 !skb_queue_empty(&adapter->tx_queue)) {
619 spin_unlock_irqrestore(&priv->driver_lock, flags);
620 adapter->wakeup_tries++;
621 priv->hw_wakeup_firmware(priv);
624 spin_unlock_irqrestore(&priv->driver_lock, flags);
627 if (adapter->ps_state == PS_SLEEP)
630 if (!priv->btmrvl_dev.tx_dnld_rdy)
633 skb = skb_dequeue(&adapter->tx_queue);
635 if (btmrvl_tx_pkt(priv, skb))
636 priv->btmrvl_dev.hcidev->stat.err_tx++;
638 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
647 int btmrvl_register_hdev(struct btmrvl_private *priv)
649 struct hci_dev *hdev = NULL;
652 hdev = hci_alloc_dev();
654 BT_ERR("Can not allocate HCI device");
658 priv->btmrvl_dev.hcidev = hdev;
659 hci_set_drvdata(hdev, priv);
661 hdev->bus = HCI_SDIO;
662 hdev->open = btmrvl_open;
663 hdev->close = btmrvl_close;
664 hdev->flush = btmrvl_flush;
665 hdev->send = btmrvl_send_frame;
666 hdev->setup = btmrvl_setup;
667 hdev->set_bdaddr = btmrvl_set_bdaddr;
669 hdev->dev_type = priv->btmrvl_dev.dev_type;
671 ret = hci_register_dev(hdev);
673 BT_ERR("Can not register HCI device");
674 goto err_hci_register_dev;
677 #ifdef CONFIG_DEBUG_FS
678 btmrvl_debugfs_init(hdev);
683 err_hci_register_dev:
687 /* Stop the thread servicing the interrupts */
688 kthread_stop(priv->main_thread.task);
690 btmrvl_free_adapter(priv);
695 EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
697 struct btmrvl_private *btmrvl_add_card(void *card)
699 struct btmrvl_private *priv;
701 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
703 BT_ERR("Can not allocate priv");
707 priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
708 if (!priv->adapter) {
709 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
713 btmrvl_init_adapter(priv);
715 BT_DBG("Starting kthread...");
716 priv->main_thread.priv = priv;
717 spin_lock_init(&priv->driver_lock);
719 init_waitqueue_head(&priv->main_thread.wait_q);
720 priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
721 &priv->main_thread, "btmrvl_main_service");
722 if (IS_ERR(priv->main_thread.task))
725 priv->btmrvl_dev.card = card;
726 priv->btmrvl_dev.tx_dnld_rdy = true;
731 btmrvl_free_adapter(priv);
739 EXPORT_SYMBOL_GPL(btmrvl_add_card);
741 int btmrvl_remove_card(struct btmrvl_private *priv)
743 struct hci_dev *hdev;
745 hdev = priv->btmrvl_dev.hcidev;
747 wake_up_interruptible(&priv->adapter->cmd_wait_q);
748 wake_up_interruptible(&priv->adapter->event_hs_wait_q);
750 kthread_stop(priv->main_thread.task);
752 #ifdef CONFIG_DEBUG_FS
753 btmrvl_debugfs_remove(hdev);
756 hci_unregister_dev(hdev);
760 priv->btmrvl_dev.hcidev = NULL;
762 btmrvl_free_adapter(priv);
768 EXPORT_SYMBOL_GPL(btmrvl_remove_card);
770 MODULE_AUTHOR("Marvell International Ltd.");
771 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
772 MODULE_VERSION(VERSION);
773 MODULE_LICENSE("GPL v2");